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JavaScript: Difference between revisions
→Usage
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==Usage== | ==Usage== | ||
===Arrays=== | |||
<syntaxhighlight lang="javascript"> | |||
let arr = [1,2,3]; | |||
// Map | |||
arr.map(x => x > 2); // [false, false, true] | |||
// Reduce or Fold | |||
// Note that if you do not provide an initial accumulator, | |||
// then the first element will be your accumulator | |||
// I.e. the first call to your function will be (arr[0], arr[1]) | |||
arr.reduce((acc, x) => acc + x, 0); //6 | |||
</syntaxhighlight> | |||
===Canvas=== | ===Canvas=== | ||
===Video=== | ===Video=== | ||